Air cleaner



J. CARTMELL Feb. 23, 1932.

AIR CLEANER Filed Jan. 26,

` INVENTQR. Carme/ ATTORNEY.

Patented Feb. 23, 193.2`

UNITED ,PATENT 'oFFIcEjA Y,

JOHN CABTMELL, OF SPOKANE, WASHINGTON, ASSIO'NOR T0 THE C. R. C. AIRCLEANER 'fpose of removing the dust from the air before it is taken intothe engine. Certain ob- ;jects of the invention are to provide anaircleaner comprising a one-piece casing with `integral inlet 'and'outletmembers, and an vinner casing' having a main -and arcuate baille cleanermembers detachably mounted therein.l lAnother object ofthe invent-ion'isto l curvezand,spacethearcuate baille members in such manner that theends of each will:l overlap thebulging center of the nextmemberwheredispose said members in such manner fasV to cause a maximuminterception of the air bythe air is compelled to im'pinge said membersin its passage therebetween. Further objects are to provide a detachablebottom panA for the 'casing having an oil contained sub-chamber with aflanged lid for retarding the escape .offain whereby its dustisdeposited on the oilfQy -Still further objects are' Vto provide novelbaffle members with means' for causing a maximum collection of dust andto passing through the device. v

With the above and otherobjects in View which `will -appear' as thedescriptiony proceeds,` the invention consists of the novelconstruction, adaptation, combination and arrangement of partshereinafter described and claimed. .These objects are accomplished bydevices illustrated .in1 the accompanying drawings; wherein Figure l isaview inside elevation showing the forward portion of` a tractor with mydevice installed thereon;

Fig. 2 is a view vin vertical section of an auxiliary cleaning apparatusthat maybe connected to the main cleaner; y f

Fig. 3 is a detail view. in perspective of the main cleaner; A

Fig. 4 is a view in longitudinal vertical section of the same takensubstantially on a broken line 4, 4 of Fig. 3; Y f

Fig. 5 is a detail view in perspective showing a fragmentary portion ofone ofthe baiiie cleaner elements; and

Fig. 6 is a detail view in perspective of the COMPANY, 0F SPOKANE,WASHINGTON Application mea'fraxineri ze; 1931, vserieu ne. 511,265.

ibottom pan.

forth.

1 A1B. CLEANER vflanged lid for the oil sub-chamberpin the Referring Atothe `drawings Vthroughout is provided with lugs 6 whereby same may bemounted for use in connection with motors and other engines that useairin theircombustion or operation. The top portion of saidcleanercasing` is provided with an integral outlet vmember 7y andan integralintake member 8. A plurality ofy sl'ots`9 lis provided in the top ofVsaid intake as shown in Fig. 3 and for reasons hereinafter set Asshownlin Fig. 1 of the,l drawings, the

device is ordinarily interposed inthe air ink take pipe line and forwardofthe carburetor with its yintake member 8 connected tothe intaleportiono f the pipe thatis openv to atmospheric pressure and its outletmember 7A separate inner casing 10 is adapted to iit snugly into the main`casing 5. f Said inner casing is installed through the open bottomofsaid main casing and is also provided with-an open bottom having anarrow flange 1l around its bottom edgey which `fits snugly up againstthe bottom edge ofthe main caslnge v The inner casing l() has a shortbaffle 12 slanting downwardly and outwardly or forwardlyfrom its upperrear end which baffle registers with the lower rear end of the intakemember 8 in the installedwposition as l which like reference numeralsindicate'like parts, the numeral 5 designate'sjthekmain 'cleaner casingthat is made in one piece and lconnected to the portion of the pipelthat leads to the intake manifold ofthe engine.

clearly 4shown in Fig. 4 ofthe drawings. A-

wall of -the inner'casing thus `forming a restricted passagel4'therewith. Ayplurality of arcuate baffle members 15,. verticallyydisposed in spaced relation and transversely .of

the inner casing, extend from the bottom of said inner and main casingsto theirtops and .y

in communication with the outlet member 7 very important feature of myinvention resides in curving and spacing the arcuate baille members 15in such manner that the vertical alignment of their tops and bottomsoverlap the central or bulging portion of the neXt baille. Thus the airpassing upwardly between said baffles, which air would ordinarily travelin a straight line, is compelled to impinge their sides as will beunderstood.

The arcuate baille members 15 may comprise a thick pad of felt or otherabsorbent material 16 that is preferably saturated with oil. Said pad isheld between two plates 17 that are provided with downwardly andoutwardly projecting riilles or baffles 18 that may be stamped orpunched outwardly from said plates. 4 The lateral edges of said baiHemembers are held in a groove or channel 19 that is formed by pressingridges outwardly' from the sides of the inner casing 10 as most clearlyshown in Fig. 5. The main baille member 13 is likewise mounted andconstructed and its bailles 18 project upwardly instead of downwardly.It 'will thus be apparent that all of said baille members may be readilyremoved and taken apart for the pur-` pose of cleaning.

A bottom pan, designated as a whole by the numeral 20, is provided withan offset flange 21 around its to J which is adapted to snugly fit thebottom e ge of the Casing 5 or rather the bottom flange 11 of the innercasing 10.

Said pan is held in Vosition on the bottom of said casing by springs 22that are so tensioned that the pan may be snapped into position as willbe understood. A sub-chamber 23 may be disposed in the lower rear end ofsaid pan and partly iilled with oil or oil soaked cotton waste or thelike. Said subchamber is provided with an open-top flanged lid 24 asshown in detail in Fig. 6. The flanges of said lid are adapted to retardthe escape of air projected into the sub-chamber so that it may depositits dust on the oil or fabric. Loose or floating oil may be placed inthe main bottom pan, as shown in Fig. 4, for collecting some of the dustfrom the air.

At each suction stroke of the engine to which the device is connectedoutside air will be drawn in through the intake member 8 and will take acourse through the device somewhat as indicated by the direction arrowsshown in Fig. 4. The air will enter both through the main port of saidintake member and through its slots 9 which will cause the air to besomewhat broken up or diffused upon its entry. The small baille 12 lwill direct the air against the main slanting baffle member 13 whoseriifles or bailles 18 will catch andretard the air sufficiently for theoil soaked pad 16 of said main baille member to collect, by adherence,much'of the dust therefrom.

Upon continuing downwardly the velocityl ofthe air will be increased bypassing through the restricted passage 14 which will serve to projectthe air downwardly into the subchamber 23. The flanges of the open-toplid 24 will retard the upward escape of the air from said sub-chamberwhereby more of its dust will adhere to its contained oil or oil soakedfabric. Upon rebounding u wardlyA from the sub-chamber the air will orman eddy due to the down coming air and the space'25 between the mainbaille member 13 and the first or adjacent arcuate baille member 15. Inthis eddy movement some of the air will strike the floating oil in thebottom pan 20 whereby some more of its dust will be deposited. From saidpan the air will pass upwardly between the arcuate baille members andoutwardly throu h the outlet member 7 to the engine. The ereinbeforedescribed overlapping disposition of said arcuate bailles, whereby theair is compelled to impinge their sides together with the retardation ofthe air by the riilles or bailles 18 of said arcuate members causing theremaining dust to be deposited on their oil saturated felt pads, willcomplete the cleaning process.

Referring to Fig. 2 of the drawings7 I sometimes provide an auxiliary oradditional cleaning apparatus in the form of a T-connection 26 for theair intake pipe and in this case the slots 9 of the intake member 8 areeliminated. The pipe joining said T-connection with the main cleanerdevice' is connected to said intake member by means of lu s 27. An innercasing 28 is installed throng the bottom of said T-connection and islled with steel wool, horse hair or the like that is provided with awire screen 29 at both its top and bottom. A bottom member 30 is securedto the underside of said T-connection by bolts 31 and it will thus beseen that the inner casing and its filler may be readily removed forcleaning. In the use of this auxiliary cleaning apparatus the air isdrawn thereinto, prior to its entry into the main cleaner, and strikesagainst the absorbent material whereby some of the dust adheres theretoas the air rebounds in its passage into the intake memberl 8.

Having thus described my invention, it being understood' that minorchanges may be resorted to in its construction and arrangement withoutdeparting from the scope and spirit of the invention, 'what I claim anddesire to secure by Letters Patent of the United States is 1. An aircleaner having in combination a one-piece main casing, integral intakeand outlet members for the casing top, said intake member having aplurality of slots arranged to diffuse the air entering its port7 aninner casing fitting snugly into the main casing and adapted to beinstalled through the open bottom thereof, a main baffle member disposedtransversely of the inner casing slanting rearwardly from the inlet toform a. restricted passage between its botrality of arcuate balilemembers spaced apart tom edge and the rear wall of said inner casing, asmall baffle arranged to direct entering air against said mainy baille,a pan detachably secured to the bottom of the casings, a sub-chamber forthe pan having oil or oil-soaked filler therein and disposed directlybelow the restricted passage, an opentop flanged lid for thesub-chamber, ity of arcuate baffle members vertically disposedtransversely of the inner casing in communication with the outlet.member, said arcuate baffles curved and spaced in such manner that theirend alignments over` lap the central bulges of adjacent bafv fles,absorbent oil saturated fabric pads for the arcuate and main baiHemembers, metal plates for said pads, riiiles punched outward from saidplates in directions slantingly adapted to intercept the passage of airthrough the casing and grooves in the side walls of the inner casing fordetachably receiving the lateral edges of said baille members. x

An air cleaner having in combination a one-piece main casing, integral.intake and outlet members for the casing top, an inner casing adaptedto be installed through the .open bottom of the main casing, a mainbaflie member slanting rearwardly from the intake to form a restrictedpassage with the inner casing, a small baffle arranged to directentering air against the main battle, a pan de tachably secured to thebottom of the casings, a sub-chamber disposed directly below therestricted passage, an open-top flanged lid for'the sub-chamber, aplurality of arcuate batile members vertically disposed transverseaplural-- to form a passage between the pan and the outlet member'. l

In testimony whereof I aliix my signature.

'JOHN CARTMELL.

ly of the inner casing in communication with the outlet member,projecting rililes and oil saturated pads for the arcuate and mainbalile members, and said arcuate bai'Hes curved and spaced in suchmanner that their end alignments vertically overlap the central bulgesof adjacent baiiies. j

3. An air cleaner having in combination a main casing, intake and outletmembers for said casing, an inner casin for the main casing, adetachable main baiie member slanting rearwardly from the intake to forma restricted passage, a small battle arranged to direct incoming airagainst the main baille, a pan detachably secured to the bottom ofthecasings, a sub-chamber disposed below the restricted passage, anopen-top flanged lid for the sub-chamber, and a plurality of arcuatebaiiie members transversely disposed of the inner casing and incommunication with the outlet member.

4. An air cleaner having in combination a main casing, intake and outletmembers for said casing, an inner casing, a. main bale member adapted toform a restricted passage, a detachable pan for the bottom of thecasings, a sub-chamber for said pan, and a plu-v

